Presidents Donald Trump and Vladimir Putin addressed the media during their first in-person meeting. The talks took place during the G-20 summit in Germany. (Published Friday, July 7, 2017)

President Donald Trump's job-approval rating in the U.S. counties that propelled him to victory in 2016 stands at 50 percent, according to a new NBC News/Wall Street Journal poll looking at "Trump Counties."

Fifty percent of adults in those counties — consisting of Republicans, Democrats and Independents – approve of the president's job, including 29 percent who strongly approve. The poll also showed that 46 percent disapprove of Trump's job, including 35 percent who do so strongly.

By comparison, last month's national NBC/WSJ poll had Trump's overall approval rating at 40 percent.

The poll's sample was taken from 439 counties in 16 states – Colorado, Florida, Georgia, Indiana, Iowa, Maine, Michigan, Minnesota, Missouri, Nevada, New Hampshire, North Carolina, Ohio, Pennsylvania, Virginia and Wisconsin – that either flipped from Barack Obama to Trump, or where Trump greatly outpaced Mitt Romney's performance in 2012.